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Crookse ES2
Earth Science Vocabulary Set 2
| Definition | Answer |
|---|---|
| A cloudlike cluster of stars or a hazy mass of cosmic dust particles and gases that occurs in interstellar space. These are thought to be the birthplace of stars. | Nebula |
| The first stage in the formation of a star, consisting of a contracting mass of gases and cosmic dust, but not yet a true star. | Protostar |
| A star near the end of the stellar life cycle that has expanded to a much larger size. | Red Giant |
| A sudden increase in the brightness of a star, which is believed to be from the explosion of the outer shell of a white dwarf star. | Nova |
| The explosive death of a massive star. | Supernova |
| A small, hot star, which is actually the left-over core of a red giant star that ran out of fuel. These stars are basically at the end of the stellar life cycle. | White Dwarf Star |
| A dense ball of atomic particles that remains at the core of a star after a supernova explosion has destroyed the rest of the star. | Neutron Star |
| A region of space where the pull of gravity is so great that nothing, not even light, can escape. Believed to be the theoretical remains of a supermassive star that has collapsed upon itself. | Black Hole |
| A system of stars, cosmic dust, and gas held together by gravity. Types include: spiral, elliptical and irregular. The one in which we live is called the Milky Way. | Galaxy |
| When light from a distant cosmic object appears to be stretched toward longer wavelengths, which means the object is quickly moving away from Earth. | Red Shift |
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